Ability to change all the different types of chats to colors of your choosing.
Example:
Yells are standard white ( on transparent chat ) - Color change to something that stands out more, like Yellow.
Clan chat standard red (on transparent chat ) - Color change to green for example.
My eyes are shit so sometimes it is hard to see the colors as they are, so adding a feature that allows players to customize the text colors for the various types of chat could be useful. I'm probably the only one though...